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gl_shader_decompiler: Clean up texture instructions

nce_cpp
ReinUsesLisp 7 years ago
parent
e5e98bb15c
commit
e3149ce341
1 changed files with 56 additions and 87 deletions
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  1. 143
      src/video_core/renderer_opengl/gl_shader_decompiler.cpp

143
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -1337,15 +1337,7 @@ private:
regs.SetRegisterToInteger(dest, true, 0, result, 1, 1);
}
void WriteTexsInstruction(const Instruction& instr, const std::string& coord,
const std::string& texture) {
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{');
++shader.scope;
shader.AddLine(coord);
shader.AddLine("vec4 texture_tmp = " + texture + ';');
void WriteTexsInstruction(const Instruction& instr, const std::string& texture) {
// TEXS has two destination registers and a swizzle. The first two elements in the swizzle
// go into gpr0+0 and gpr0+1, and the rest goes into gpr28+0 and gpr28+1
@ -1357,19 +1349,17 @@ private:
if (written_components < 2) {
// Write the first two swizzle components to gpr0 and gpr0+1
regs.SetRegisterToFloat(instr.gpr0, component, "texture_tmp", 1, 4, false,
regs.SetRegisterToFloat(instr.gpr0, component, texture, 1, 4, false,
written_components % 2);
} else {
ASSERT(instr.texs.HasTwoDestinations());
// Write the rest of the swizzle components to gpr28 and gpr28+1
regs.SetRegisterToFloat(instr.gpr28, component, "texture_tmp", 1, 4, false,
regs.SetRegisterToFloat(instr.gpr28, component, texture, 1, 4, false,
written_components % 2);
}
++written_components;
}
--shader.scope;
shader.AddLine('}');
}
static u32 TextureCoordinates(Tegra::Shader::TextureType texture_type) {
@ -2600,7 +2590,6 @@ private:
}
case OpCode::Id::TEX: {
Tegra::Shader::TextureType texture_type{instr.tex.texture_type};
std::string coord;
const bool is_array = instr.tex.array != 0;
UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
@ -2633,21 +2622,23 @@ private:
bool depth_compare_extra = false;
const auto scope = shader.Scope();
switch (num_coordinates) {
case 1: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index);
if (is_array) {
if (depth_compare) {
coord = "vec3 coords = vec3(" + x + ", " + depth_value + ", " +
array_elem + ");";
shader.AddLine("vec3 coords = vec3(" + x + ", " + depth_value + ", " +
array_elem + ");");
} else {
coord = "vec2 coords = vec2(" + x + ", " + array_elem + ");";
shader.AddLine("vec2 coords = vec2(" + x + ", " + array_elem + ");");
}
} else {
if (depth_compare) {
coord = "vec2 coords = vec2(" + x + ", " + depth_value + ");";
shader.AddLine("vec2 coords = vec2(" + x + ", " + depth_value + ");");
} else {
coord = "float coords = " + x + ';';
shader.AddLine("float coords = " + x + ';');
}
}
break;
@ -2658,17 +2649,18 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 1);
if (is_array) {
if (depth_compare) {
coord = "vec4 coords = vec4(" + x + ", " + y + ", " + depth_value +
", " + array_elem + ");";
shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " +
depth_value + ", " + array_elem + ");");
} else {
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + array_elem + ");";
shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
array_elem + ");");
}
} else {
if (depth_compare) {
coord =
"vec3 coords = vec3(" + x + ", " + y + ", " + depth_value + ");";
shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
depth_value + ");");
} else {
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
}
}
break;
@ -2681,14 +2673,14 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 2);
if (is_array) {
depth_compare_extra = depth_compare;
coord = "vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
array_elem + ");";
shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
array_elem + ");");
} else {
if (depth_compare) {
coord = "vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
depth_value + ");";
shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
depth_value + ");");
} else {
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
}
}
break;
@ -2700,7 +2692,7 @@ private:
// Fallback to interpreting as a 2D texture for now
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
texture_type = Tegra::Shader::TextureType::Texture2D;
}
@ -2709,9 +2701,6 @@ private:
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{');
++shader.scope;
shader.AddLine(coord);
std::string texture;
switch (instr.tex.GetTextureProcessMode()) {
@ -2765,23 +2754,20 @@ private:
static_cast<u32>(instr.tex.GetTextureProcessMode()));
}
}
if (!depth_compare) {
shader.AddLine("vec4 texture_tmp = " + texture + ';');
if (depth_compare) {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} else {
std::size_t dest_elem{};
for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components
continue;
}
regs.SetRegisterToFloat(instr.gpr0, elem, "texture_tmp", 1, 4, false,
dest_elem);
regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
++dest_elem;
}
} else {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
}
--shader.scope;
shader.AddLine('}');
break;
}
case OpCode::Id::TEXS: {
@ -2884,6 +2870,7 @@ private:
}
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, depth_compare);
std::string texture;
switch (process_mode) {
case Tegra::Shader::TextureProcessMode::None: {
@ -2908,12 +2895,11 @@ private:
static_cast<u32>(instr.texs.GetTextureProcessMode()));
}
}
if (!depth_compare) {
WriteTexsInstruction(instr, coord, texture);
} else {
WriteTexsInstruction(instr, coord, "vec4(" + texture + ')');
}
if (depth_compare) {
texture = "vec4(" + texture + ')';
}
WriteTexsInstruction(instr, texture);
break;
}
case OpCode::Id::TLDS: {
@ -2974,13 +2960,12 @@ private:
static_cast<u32>(instr.tlds.GetTextureProcessMode()));
}
}
WriteTexsInstruction(instr, coords, texture);
WriteTexsInstruction(instr, texture);
break;
}
case OpCode::Id::TLD4: {
ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D);
ASSERT(instr.tld4.array == 0);
std::string coord;
UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
@ -2997,10 +2982,7 @@ private:
if (depth_compare)
num_coordinates += 1;
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{');
++shader.scope;
const auto scope = shader.Scope();
switch (num_coordinates) {
case 2: {
@ -3031,7 +3013,9 @@ private:
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4.component) + ')';
if (!depth_compare) {
if (depth_compare) {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} else {
shader.AddLine("vec4 texture_tmp = " + texture + ';');
std::size_t dest_elem{};
for (std::size_t elem = 0; elem < 4; ++elem) {
@ -3043,11 +3027,7 @@ private:
dest_elem);
++dest_elem;
}
} else {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
}
--shader.scope;
shader.AddLine('}');
break;
}
case OpCode::Id::TLD4S: {
@ -3074,26 +3054,22 @@ private:
const std::string op_y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
shader.AddLine("vec3 coords = vec3(" + op_a + ", " + op_y + ", " + op_b + ");");
}
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4s.component) + ')';
if (!depth_compare) {
WriteTexsInstruction(instr, coords, texture);
} else {
WriteTexsInstruction(instr, coords, "vec4(" + texture + ')');
std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4s.component) + ')';
if (depth_compare) {
texture = "vec4(" + texture + ')';
}
--shader.scope;
shader.AddLine('}');
WriteTexsInstruction(instr, texture);
break;
}
case OpCode::Id::TXQ: {
UNIMPLEMENTED_IF_MSG(instr.txq.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
++shader.scope;
shader.AddLine('{');
// TODO: the new commits on the texture refactor, change the way samplers work.
const auto scope = shader.Scope();
// TODO: The new commits on the texture refactor, change the way samplers work.
// Sadly, not all texture instructions specify the type of texture their sampler
// uses. This must be fixed at a later instance.
const std::string sampler =
@ -3104,7 +3080,8 @@ private:
regs.GetRegisterAsInteger(instr.gpr8) + ')';
const std::string mip_level = "textureQueryLevels(" + sampler + ')';
shader.AddLine("ivec2 sizes = " + texture + ';');
regs.SetRegisterToInteger(instr.gpr0, true, 0, "sizes.x", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 0, true, 0, "sizes.x", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 1, true, 0, "sizes.y", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 2, true, 0, "0", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 3, true, 0, mip_level, 1, 1);
@ -3115,8 +3092,6 @@ private:
static_cast<u32>(instr.txq.query_type.Value()));
}
}
--shader.scope;
shader.AddLine('}');
break;
}
case OpCode::Id::TMML: {
@ -3131,17 +3106,18 @@ private:
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, false);
// TODO: add coordinates for different samplers once other texture types are
const auto scope = shader.Scope();
// TODO: Add coordinates for different samplers once other texture types are
// implemented.
std::string coord;
switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: {
coord = "float coords = " + x + ';';
shader.AddLine("float coords = " + x + ';');
break;
}
case Tegra::Shader::TextureType::Texture2D: {
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
break;
}
default:
@ -3149,22 +3125,15 @@ private:
// Fallback to interpreting as a 2D texture for now
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
texture_type = Tegra::Shader::TextureType::Texture2D;
}
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{');
++shader.scope;
shader.AddLine(coord);
const std::string texture = "textureQueryLod(" + sampler + ", coords)";
const std::string tmp = "vec2 tmp = " + texture + "*vec2(256.0, 256.0);";
shader.AddLine(tmp);
shader.AddLine("vec2 tmp = " + texture + " * vec2(256.0, 256.0);");
regs.SetRegisterToInteger(instr.gpr0, true, 0, "int(tmp.y)", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 1, false, 0, "uint(tmp.x)", 1, 1);
--shader.scope;
shader.AddLine('}');
break;
}
default: {

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